Embedded system Micro controller

Introduction to embedded system What is embedded? Fix firmly In a surrounding mass. What is embedded system? embedded system is a special purpose system in which the computer is completely encapsulated by the device it controls. an embedded system performs pre-defined tasks, usually with very specific requirements. They are designed such that their size small and cost is also low.

History:- The Apollo Guidance Computer, the first recognizably modern embedded system developed by Charles Stark Draper at the MIT Instrumentation Laboratory .

Why to use Embedded system are used to reduce the size of application. It performs a particular application very efficiently It costs less, it is accurate and reliable.

Examples:- Automatic teller machine. (ATM) Avionics (they are the internal guidance systems present in aircraft and missiles. Telephones,printers, calculators In automobiles:-engine controller Home automations:-air conditioner House hold applications:-micro wave ovens, tv, washing machine, dvd players etc.

The heart of embedded system Microcontroller

Difference between microcontroller and micro processor

Pin diagram of 8052 micro controller:-

Microcontroller outline with its basic elements and internal connections

Components of micro controller:- Cpu Memory unit Bus Input/output unit